Home / 21,282.25-31,925.21-5,487.14

Finding the Fourth Proportional to 21,282.25, 31,925.21 and 5,487.14

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Solution

The fourth proportional to 21,282.25, 31,925.21 and 5,487.14 is: 8,231.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.25 : 31,925.21 = 5,487.14 : x
  2. Step 2: Convert to fraction form
    21,282.25/31,925.21 = 5,487.14/x
  3. Step 3: Cross multiply
    21,282.25x = 31,925.21 × 5,487.14
  4. Step 4: Simplify right side
    21,282.25x = 175,178,044.89
  5. Step 5: Solve for x
    x = 175,178,044.89/21,282.25
  6. Step 6: Final answer
    x = 8,231.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.